condition. we'll have more at 10. >>> and we're on the campaign trail now. in hours, joe biden and paul ryan will go head-to-head. the one and only showdown before the elect. undecided voters and analysts closely watching to so which comes out on top. bob vernard has more on the vice presidential debate preview. >> reporter: the locals are calling it the thrill in theville, as in danville, kentucky. more than a side show but not critical as the presidential debate. tonight's biden-ryan faceoff could help sway a few voters, when, in some places, everyone counts. vice president joe biden arriving in kentucky this afternoon now three hours until his one and only debate, with congressman paul ryan. mitt romney's running mate keeping a low public profile. here he is out for coffee. >> joe biden's been on the stage many times before. this is my first time. sure, it's a nervous situation. >> reporter: during their 90- minute debate, they will be sitting at a table at center cool them danville, covering domestic and foreign policy issues, leaving delaware this morning, the vice president seemed upbe